One problem related to engine head gasket failure has been reported for the 2011 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Chevrolet Impala based on all problems reported for the 2011 Impala.
Tl- the contact owns a 2011 Chevrolet Impala. The contact stated that while driving 70mph the vehicle began to rapidly decelerate. The service traction, check engine and reduced engine power lights illuminated on the instrument panel. The vehicle was taken to a dealer where the technician diagnosed the throttle position sensor malfunctioned. The throttle body and gasket was replaced. The manufacturer was made aware of the failure. The failure mileage was 64,613 and the current mileage was 72,200. Sr.